Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth. -2y^2+6y=-2 a. -3.3, 0.3 b. -11.5, 14.5 c. -0.61, 6.61 d. -0.3, 3.3
help
This will show the answer, and how to work it out. Scroll down to the bottom to see the answer on the number line.
On the number line, you can see that -0.3 and 3.3 are plotted.
How about this one x^2-5x=12 a. 6.77, -1.77 b. 2.4, 4.27 c. 20.75, -15.75 d. 5.58, -0.58
Subtract 12 from both sides of the equation. It becomes- x^2-5x-12 Plug these values into the quadratic formula and solve. http://www.wolframalpha.com/input/?i=Use+the+quadratic+formula+to+solve+x%5E2-5x-12 The link will show you the answer and how to solve it.
On the number line, the points 6.77 and -1.77 are plotted.
Ok thanks so much
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